Evidence map›Paper›PMID 25296113›Full record

ArticleNature communications2014

Constitutive phospholipid scramblase activity of a G protein-coupled receptor.

Michael A Goren, Takefumi Morizumi, Indu Menon, Jeremiah S Joseph, Jeremy S Dittman, Vadim Cherezov, Raymond C Stevens, Oliver P Ernst, Anant K Menon

Open access · bronzeAbstract read
In one paragraph

Article in Nature communications, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
4.4field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 127 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Opsins are Phospholipid Scramblases in All Domains of Life.bioRxiv : the preprint server for biology · 2025
    Article
  10. Article
  11. MprF fromScience advances · 2025
    Article
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  13. Review
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21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Michael A GorenDepartment of Biochemistry, Weill Cornell Medical College, New York, New York 10065, USA.
Takefumi MorizumiDepartment of Biochemistry, University of Toronto, Toronto, Ontario, Canada M5S 1A8.
Indu MenonDepartment of Biochemistry, Weill Cornell Medical College, New York, New York 10065, USA.
Jeremiah S JosephDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA.
Jeremy S DittmanDepartment of Biochemistry, Weill Cornell Medical College, New York, New York 10065, USA.
Vadim CherezovDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA.
Raymond C StevensDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA.
Oliver P Ernst1] Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada M5S 1A8 [2] Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada M5S 1A8.
Anant K MenonDepartment of Biochemistry, Weill Cornell Medical College, New York, New York 10065, USA.
Cornell University · USScripps Research Institute · USUniversity of Toronto · CA

Funding

Project 3U54GM094618 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI STEVENS, RAYMOND C · 2010 to 2014
$17.1M
TRI-INSTITUTIONAL TRAINING PROGRAM IN VISION RESEARCHT32EY007138 · NEI · WEILL MEDICAL COLL OF CORNELL UNIV · PI RODRIGUEZ-BOULAN, ENRIQUE J · 1994 to 2013
$3.2M
Analysis of synaptic protein dynamicsR01GM095674 · NIGMS · WEILL MEDICAL COLL OF CORNELL UNIV · PI DITTMAN, JEREMY SAMUEL · 2011 to 2019
$3.2M
Phospholipid Flip-flop in Biogenic MembranesR01GM071041 · NIGMS · WEILL MEDICAL COLL OF CORNELL UNIV · PI MENON, ANANT K · 2005 to 2013
$2.8M
NEI NIH HHS T32 EY007138NIGMS NIH HHS GM071041NIGMS NIH HHS GM094618NIGMS NIH HHS GM095674NIGMS NIH HHS R01 GM071041NIGMS NIH HHS R01 GM095674NIGMS NIH HHS U54 GM094618
6 · The paper itself

Abstract

Opsin, the rhodopsin apoprotein, was recently shown to be an ATP-independent flippase (or scramblase) that equilibrates phospholipids across photoreceptor disc membranes in mammalian retina, a process required for disc homoeostasis. Here we show that scrambling is a constitutive activity of rhodopsin, distinct from its light-sensing function. Upon reconstitution into vesicles, discrete conformational states of the protein (rhodopsin, a metarhodopsin II-mimic, and two forms of opsin) facilitated rapid (>10,000 phospholipids per protein per second) scrambling of phospholipid probes. Our results indicate that the large conformational changes involved in converting rhodopsin to metarhodopsin II are not required for scrambling, and that the lipid translocation pathway either lies near the protein surface or involves membrane packing defects in the vicinity of the protein. In addition, we demonstrate that β2-adrenergic and adenosine A2A receptors scramble lipids, suggesting that rhodopsin-like G protein-coupled receptors may play an unexpected moonlighting role in re-modelling cell membranes.

Indexed as

AnimalsCattleOpsinsPhospholipid Transfer ProteinsProtein ConformationReceptors, Adenosine A2Receptors, Adrenergic, beta-2RhodopsinOpsinsPhospholipid Transfer ProteinsReceptors, Adenosine A2Receptors, Adrenergic, beta-2Rhodopsin

Identifiers

PMID25296113
PMCPMC4198942
OpenAlexW1993460406

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.